[FFmpeg-trac] #7212(ffmpeg:new): -ss before input does not provide proper output

[FFmpeg]

#7212: -ss before input does not provide proper output
-------------------------------------+-------------------------------------
             Reporter:  ryonsabouni  |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:  ffmpeg       |                  Version:  git-
             Keywords:               |  master
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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 Summary of the bug: When using -ss seek option before input file, seeks to
 correct spot BUT freezes the last video frame so that the output file is
 the same length as the input file. The audio is cut correctly, but the
 video is not.
 How to reproduce:
 {{{
 % ffmpeg -ss 00:00:xx -i input.mp4 -c copy output.mp4
 ffmpeg version 4.0
 built on mac
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/7212>
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